On/off button not working

hello! i just dropped my camera today on accident. it is the Fujifilm Instax SQ6 Instant Camera. i am pretty sure it is the on/off button because when i push the on/off button on the camera does not move an inch at all. i am able to remove the small top part and the on /off button comes off completely. i just need to know how i can reattach it so it can activate it’s circuit and work again. thank you!